Inflatable bed



FIG. 1 is a perspective view of an inflatable bed showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left elevational view thereof;

FIG. 5 is a right elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines show portions of the article which form no part of the claimed design. 

CLAIM The ornamental design for an inflatable bed, as shown and described. 